5 * More than enough for everybody ;) The huge number of majors
6 * is a leftover from 16bit dev_t days, we don't really need that
12 * This is limited by the naming scheme enforced in sd_probe,
13 * add another character to it if you really need more disks.
15 #define SD_MAX_DISKS (((26 * 26) + 26 + 1) * 26)
18 * Time out in seconds for disks and Magneto-opticals (which are slower).
20 #define SD_TIMEOUT (30 * HZ)
21 #define SD_MOD_TIMEOUT (75 * HZ)
24 * Number of allowed retries
26 #define SD_MAX_RETRIES 5
27 #define SD_PASSTHROUGH_RETRIES 1
30 * Size of the initial data buffer for mode and read capacity data
32 #define SD_BUF_SIZE 512
35 struct scsi_driver *driver; /* always &sd_template */
36 struct scsi_device *device;
37 struct class_device cdev;
39 unsigned int openers; /* protected by BKL for now, yuck */
40 sector_t capacity; /* size in 512-byte sectors */
44 unsigned WCE : 1; /* state of disk WCE bit */
45 unsigned RCD : 1; /* state of disk RCD bit, unused */
46 unsigned DPOFUA : 1; /* state of disk DPOFUA bit */
48 #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,cdev)
50 static int sd_revalidate_disk(struct gendisk *disk);
51 static void sd_rw_intr(struct scsi_cmnd * SCpnt);
52 static int sd_probe(struct device *);
53 static int sd_remove(struct device *);
54 static void sd_shutdown(struct device *dev);
55 static int sd_suspend(struct device *dev, pm_message_t state);
56 static int sd_resume(struct device *dev);
57 static void sd_rescan(struct device *);
58 static int sd_init_command(struct scsi_cmnd *);
59 static int sd_issue_flush(struct device *, sector_t *);
60 static void sd_prepare_flush(request_queue_t *, struct request *);
61 static void sd_read_capacity(struct scsi_disk *sdkp, unsigned char *buffer);
62 static void scsi_disk_release(struct class_device *cdev);
63 static void sd_print_sense_hdr(struct scsi_disk *, struct scsi_sense_hdr *);
64 static void sd_print_result(struct scsi_disk *, int);
66 #define sd_printk(prefix, sdsk, fmt, a...) \
68 sdev_printk(prefix, (sdsk)->device, "[%s] " fmt, \
69 (sdsk)->disk->disk_name, ##a) : \
70 sdev_printk(prefix, (sdsk)->device, fmt, ##a)
72 #endif /* _SCSI_DISK_H */